Acoustics – Sound-modifying means – Sound absorbing panels
Reexamination Certificate
2008-01-15
2008-01-15
Donovan, Lincoln (Department: 2837)
Acoustics
Sound-modifying means
Sound absorbing panels
C181S284000, C181S286000, C181S294000
Reexamination Certificate
active
10820205
ABSTRACT:
A multi-layered fiber reinforced thermoplastic sound absorbing panel includes a porous fiber reinforced thermoplastic core layer having a first surface and a second surface, and includes a thermoplastic material and from about 20 weight percent to about 80 weight percent fibers, a tie layer covering the second surface of the core layer and including a thermoplastic material, and a barrier layer covering the tie layer. The barrier layer includes a thermoplastic material having a melting temperature higher than the melting temperature of the core layer thermoplastic material. The tie layer bonds the barrier layer to the core layer. The panel also includes a non-woven layer including a fabric bonded to the barrier layer. The non-woven layer forms an outer surface of the panel.
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Hipwell Jesse Guy
Jerri Huda Abdul
Raghavendran Venkat Krishna
Woodman Daniel Scott
Armstrong Teasdale LLP
Azdel, Inc.
Luks Jeremy
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